May 2013 CONSTRUCTION MANUAL

Transcription

1 May 2013 CONSTRUCTION MANUAL

2 Table of Contents Limitations... 1 Panel Specification... 2 Facing Material (OSB)... 2 Adhesive Material... 2 Core Material... 2 Panel Weight... 3 Panel Insulation... 3 Panel Structural Properties... 3 Panel Sizes... 4 Wire Chases... 4 Foundation and Floor Deck... 4 Delivery and Handling... 4 Storage Protection... 4 Panel Lifting Procedure... 5 Panel Fastening... 5 Splines... 5 Adhesive and Sealants... 5 Staples or 8d Nails... 6 Wall Length Adjustment... 6 Termite Protection... 6 Thermal Barrier... 7 Vapor Barriers... 7 Attachment of Exterior Cladding to Panels... 7 May 2013 ii

3 References... 8 APPENDIX I: FASTENERS... 1 APPENDIX II: LOADING TABLES... Error! Bookmark not defined. Specifications CSI format....4 May 2013 ii

4 Xtreme CBS Panel Installation Guidelines Limitations The construction details shown in this manual can be used in the construction of buildings which are limited by the followings factors: Building Size Length: 60 Wall Height 10 Width: 40 Height: 35 Roof Slope 3:12 12:12 Roof Span: See Table 1 Rake Overhang 12 Deflection Criteria Ceilings and walls: L/240 Number of stories 2 Wind Exposure Seismic Zone Dead Loads C (Open terrain) C Floor: 10 psf Wall: 10 psf Ceiling: 5 psf Roof: 10 psf Life Loads Floor: 40 psf Attic: 20 psf (limited storage) Roof: 16 psf - 70 psf * Wind Loading 130 mph * Select Min. Panel thickness from table 1 (See Appendix II) May 2013 PG. 1. 1

5 Houses built in regions where wind speed is greater than 130mph, regions subjected to storm surge and regions with seismic loads for category D 0 or greater (ASCE 7) or which limits are outside the limits listed above will require engineering design and must follow the details set out but such design. NOTE: Failure to follow the recommendations in this manual and / or construction method set out in the Prescriptive Method for Structural Insulated Panels (SIPs) Used in Wall Systems in Residential Construction (NAHB Research Center) will void all warranties. Panel Specification Facing Material (OSB) Thickness: 7/16 (Nominal) The OSB (Oriented stranded board) panels conform to the U.S. Voluntary Product Standard PS 2 (Performance Standard for Wood-based Structural-use Panels). Tests results obtained for the boards are better than min results listed in the Prescriptive Method for Structural Insulated Panels (SIPS) Used in Wall Systems in Residential Construction. For result values contact WindGuard. Adhesive Material The adhesive material used in the fabrication of WindGuard panels is a solvent free, one-component, moisture-curing, non-volatile urethane adhesives used exclusively for laminating composite structural panels. The adhesive is Class 2, type II in accordance with ICC ES Acceptance Criteria AC 05 [17]. Core Material Xtreme CBS Panel core is Expanded Polystyrene Insulation. Core thickness: 3 5/8, 5 5/8, 7 3/8, 9 3/8 Insulation Value (R/inch thickness): o F EPS is subject to attack by petroleum based solvents. Care should be taken to prevent contact between EPS and these solvents or their vapors. May 2013 PG. 1. 2

6 Panel Weight OSB THICKNESS ( ) 7/16 EPS CORE THICKNESS (nom.) 3 ½ 5 ½ 7 ¼ 9 ¼ PANEL WEIGHT (pounds per sq. ft.) Panel Insulation OSB THICKNESS ( ) 7/16 EPS CORE THICKNESS (nom.) 3 ½ 5 ½ 7 ¼ 9 ¼ PANEL INSULATION (R) When calculating wall and ceiling insulation, consider lining and air film insulation properties in addition to panel insulation, in particular when comparing to conventional construction. Panel Structural Properties Xtreme CBS operates under individual panel manufacturer license. All test documents published by the appropriate manufacturer apply to Xtreme CBS Panels. Engineering and load tables are provided by each separate manufacturer. Load and span limits from appropriate manufacturer for Xtreme CBS Panels and other load and capacity tables for all other building components must be followed strictly. No change or customizing to panel / wall connections shall be done without consulting a structural engineer, failure to do so will void all warranties. For Load and Span Tables see Appendix II. May 2013 PG. 1. 3

7 Panel Sizes Xtreme CBS can deliver: 24 ±⅛ x 8 ±⅛ Blank Panels: Panel cut to size: Please note that the long side is the direction of maximum strength. See OSB stamp. 4 x8, 4 x9, 4 x10 8 x8, 9 x8, 10 x8 panels with window and door cutouts can be customized to the job. Wire Chases The Structural Insulated Panels manufactured by our suppliers is both simple and easy for electricians to wire. It does require a small amount of advance planning. 1-1/2 wiring chases are provided for quick access to panel interiors as described in the wiring detail drawings. These chases are cut horizontally for the wire in pre cut panels. Foundation and Floor Deck The foundation walls must be true and square. Any discrepancy must be rectified. It is imperative that the floor deck is built carefully in order to accommodate a pre-cut structure. The floor deck must be square and leveled. An uneven floor deck will result in an A or V joint shape which in turn will affect the structural integrity of the building. Having a true, square and level foundation and floor deck can save hours of erection time. Delivery and Handling Care must be taken when loading and unloading from trucks in order to prevent damage to the panels. Xtreme CBS protects the panels with cargo hold down straps during transportation to prevent crushing of SIP edges. In order to prevent delamination while manual handling the panels, the builder needs to make sure that the panels are not lifted by the top skin. Storage Protection When Xtreme CBS panels are stored, they must be fully supported and protected from the weather elements. Store panels on a flat surface, elevated from the ground, with supports placed at least 4 on center. Cover stored panels with tarps or similar protective wraps. When panels are used as roof elements, roofing must be immediately applied or panels must be protected with temporary cover. Wall panels should have a code approved weather-proof cladding applied immediately. If wall cladding is delayed (more than three weeks) of if there is an anticipated exposure to precipitation, apply temporary breathable weather-proof cladding. May 2013 PG. 1. 4

8 Panel Lifting Procedure Roof panels will require a crane. Two holes must be drilled just above the center line of the panel and in a ¼ of the width of the panel from each side. Eye bolts must be inserted through the holes and secured on the bottom with a wide washer and nut. The eye bolt must be at least ½ in diameter. Please note that under no circumstances can anyone be beneath the panel while being lifted. Panel Fastening Xtreme CBS wall panels are joined together using splines and plates. Panels are fastened together by nails or staples which can be substituted by screws of equal or larger capacity. Screw fasteners require a minimum of 1 penetration into the support. Together with fasteners, adhesive must be used. (See Drawings). Adhesives between splines and panel skin should be such that it does not damage the panel core. Splines All joints of two panels must be joined by splines. In most cases two panels are joined together by two OSB splines. 2X wood splines are provided for areas of higher than usual point loads. Failure to install splines as specified will violate the structural integrity of a wall. During installation, panel joints must be sealed with foam sealant. Wall elements are shipped with spline channels pre-routed. However, if modifications are done on site, new spline channels must be made using a router with a 5/8 diameter and 2 long bit for OSB splines. In the case of 2X splines, the foam must be cut to suit. Please follow the gluing and fastening instructions as provided by the construction details on the blueprints and this construction manual. Lumber framing material used for Xtreme CBS SIPs shall meet or exceed the mechanical properties and specific gravity of No. 2 SPF. Adhesive and Sealants Adhesive used with Xtreme CBS Panels must be wood-to-wood bonding adhesives which are safe to use in conjunction with expanding polystyrene foam (EPS). Apply the adhesive in a ¼ x ⅛ bead to wood surfaces only. This size of an application bead will result in an optimum coating when the panels and splines are installed in accordance with the Prescribed Method for Structural Insulated Panels (SIPs) used in Wall Systems In Residential Construction from the U.S. Department of Housing and Urban Development. Expanding Foam Sealant is required when sealing joints in contact with the EPS foam insulation. Apply the sealant in a ⅜ bead where shown in the details in this manual. When properly applied, the expanding foam sealant will augment the overall tightness of the structure. May 2013 PG. 1. 5

9 Staples or 8d Nails Xtreme CBS panels are fastened using 8d nails at 6 on center for the connections of splines and plates as shown in drawings in this Installation Manual. Staples can be used instead as typical fasteners for a project. For staples, the following criteria needs to be met: Minimum Staple length = 1 ½ 14 gauge 6 on center 16 gauge 4 on center The suggested size and spacing for staples is an equivalent to the typical 8d nails. Each project should be reviewed to make sure that the minimum nailing patterns satisfy design conditions. High diaphragm loads may require more fasteners. Consult a structural engineer if in doubt. See Appendix I for Nail Withdrawal Capacities in OSB and Pullout and Lateral Withdrawal Capacities of Screws. Screws used for the connection of SIP wall to wood members shall be corrosion resistant, have threaded or drill point and shall be sized to penetrate a minimum of 1 inch (25.4 mm) into the wood member to which the SIP assembly is being attached. SIP Fasteners shall meet the following requirements: Nominal thread diameter ¼ ; Nominal shank diameter 3/16 ; Nominal head diameter 5/8. SIP fasteners shall have a minimum edge distance of 1-9/16 and a maximum edge distance of 2-7/8 Galvanized screws. Wall Length Adjustment Due to possible error in the size of the floor deck or even inaccuracies in thermal gap size left between panels, it may be necessary to adjust the length of the wall. Xtreme CBS will supply the last panel of each wall 2 longer so any correction necessary will be done to this panel. This will require the rerouting of the spline channel. Termite Protection In high risk areas for termite infestation, it is the responsibility of the builder to provide adequate protection. Some of the protection measures are listed below: Use a non toxic termite bate system (including under a slab) Use solid concrete or masonry wall foundation Install a steel mesh barrier control system Install a sand or diatomaceous earth barrier Treat walls with borate to higher than 3 from the foundation May 2013 PG. 1. 6

10 Thermal Barrier All interior surfaces of Xtreme CBS panels must be finished with a thermal barrier as per code. A 15 minute thermal barrier can be obtained with a ½ gypsum board or equivalent. Hourly fire rated systems can be achieved using high performance thermal barrier as type X and C gypsum board spray applied fire-proofing or equivalent. Vapor Barriers Vapor retarder requirements may be mandated by building codes. Xtreme CBS recommends the use of vapor barrier on all outer faces of SIP panels which are part of external walls. Attachment of Exterior Cladding to Panels Xtreme CBS Panels are used in both commercial and residential applications. Most exterior claddings currently available in the market place make reference that their product should be attached to the framing members of the structure. Xtreme CBS Panels do not incorporate framing members and therefore do not meet their written recommendations. However, a review of the requirements for attachment typically calls out for the cladding to be attached with 8d nail 16 or 24 on center depending on the framing spacing. Using these values one can compare the pullout values for 8d nails into standard framing and compare that to the fastener pullout values listed by nail manufacturers. This comparison shows that all claddings with the requirements of fastening to framing members can be matched by applying 8d ring shanked nails 12 o.c.into Sipstech Structural Panels. This would include the attachment of standard sidings such as hardboard, cedar, redwood, composites and cementitious sidings. This type of comparison is also valid for the application of laths for stucco as well as brick tie placement. Typically these products are applied by simply increasing the number of fasteners 25%. Whereas, a manufacturer calls out for fasteners 16 o.c. the fasteners would be placed in a panel application at a rate of 12 o.c. This will allow the panel application to meet or exceed the pull out values designed by the manufacturer. It should be noted that the fastener placement can be maintained at manufacturer s recommendations provided a nail is replaced with a screw. In all cases the fastener should be corrosion resistant. May 2013 PG. 1. 7

11 References General Panel installation Manual General Panel Inc. Prescriptive Method for Structural Insulated Panels (SIPs) Used in Wall Systems in Residential Construction - NAHB Research Center Builder s Guide to Structural Insulated Panel Systems Joseph Lstiburek Building Science press (2008) Technology Inventory: Structural Insulated Panels May 2013 PG. 1. 8

12 APPENDIX I FASTENERS May 2013

13 Staples or 8d Nails Staples may be used instead of 8d nails provided that they meet the following criteria: Minimum Staple Length = 1-1/2 14 gauge 6 on center 16 gauge 4 on center Chisel point staples are preferred. The suggested size and spacing for st6aples is an equivalent to the typical 8d nail. Each project should be reviewed to make sure that the minimum patterns satisfy design conditions. High diaphragm loads may require more fasteners depending on the loads. Nail Withdrawal Capacity in OSB The attachment of finishing materials (such as shingles, siding, drywall, etc.) to SIP panels requires the use of nails and screws. The following is a summary of the average ultimate values achieved for various nail fasteners placed into 7/16 OSB. Nail Size Description Withdrawal Capacity (lbs) 4d Ring Shank Drywall Nail 133 6d Smooth Galvanized 59 8d Smooth Coated Sinker 150 8d Smooth Galvanized Spiral Shank 112 8d Galvanized Ring Shank 77 8d Smooth Galvanized 65 8d Bright Box d Galvanized Ring Shank d Smooth Galvanized 63 16d Bright Box 90 This data has been provided by SIPSTECH to provide manufacturers, designers and engineers with values for assessment of fastener requirements. These values are average ultimate capacities and an appropriate factor of safety should be applied to determine design values. May 2013

14 Pullout and Lateral Withdrawal Capacity of Screws For the installation of cabinets, certain sidings, etc., screws are the prefer fastener. The following charts summarize the lowest ultimate average value achieved for a particular screw type when placed in three different thickness of OSB. AVERAGE LATERAL WITHDRAWAL (SHEAR) - LBS SCREW SIZE OSB THICKNESS 7/16 5/8 3/4" #6 Deck Screw #8 Deck Screw #10 Deck Screw #12 Deck Screw #14 Deck Screw AVERAGE DIRECT WITHDRAWAL (PULLOUT) - LBS SCREW SIZE OSB THICKNESS 7/16 5/8 3/4" #6 Deck Screw #8 Deck Screw #10 Deck Screw #12 Deck Screw #14 Deck Screw This data has been provided by SIPSTECH to provide manufacturers, designers and engineers with values for assessment of fastener requirements. These values are average ultimate capacities and an appropriate factor of safety should be applied to determine design value. May 2013